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A train covered k km at 40 kmph and another 2k km at 20 kmph Find the average speed of the train in ......

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A train covered k km at 40 kmph and another 2k km at 20 kmph. Find the average speed of the train in covering the entire 3k km ?

Explanation:

Total time taken = k/40 + 2k/20 hours

= 5k/40 = k/8 hours

Average speed = 3k/(k/8) = 24 kmph.

Hence, option 2 is the correct answer.

By: Amit Kumar
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